package com.atguigu.juc.date929;

import java.util.concurrent.CountDownLatch;

/**
 * @Author: shenhao
 * @CreatTime: 2024/9/29 14:42
 * @Version: 1.0
 * CountDownLatch主要有两个方法，当一个或多个线程调用await方法时，这些线程会阻塞。
 *  * 其它线程调用countDown方法会将计数器减1(调用countDown方法的线程不会阻塞)，
 *  * 当计数器的值变为0时，因await方法阻塞的线程会被唤醒，继续执行。
 */
public class CountDownLatchDemo {
    public static void main(String[] args) throws InterruptedException {
        CountDownLatch countDownLatch = new CountDownLatch(7);
        for (int i = 1; i <= 7; i++) {
            Thread thread=new Thread(()->{
                System.out.println(Thread.currentThread().getName()+"从工作室离开");
                countDownLatch.countDown();
            },String.valueOf(i));
            thread.start();
        }
        countDownLatch.await();
        System.out.println(Thread.currentThread().getName()+"\t打扫卫生,关闭工作室大门");
    }
}
